Chimney and smoke-stack.



H. CORREGAN. CHIMNEY AND SMOKE STACK.

APPLICATION FILED MAR.11, 1907.

Patenteu n W. 24; 1908.

m m M/ Witnesses. MU

UNITED STATES PATENT OFFICE.

HOWARD OORREGAN, OF WHITEMOUTH, MANITOBA, CANADA.

CHIMNEY AND SMOKE-STACK.

Application filed March 11, 1907.

To all whom it may concern:

Be it known that I, HOWARD OORREUAN, of the village of IVhitemouth, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Chimneys and Smoke-Stacks, of which the following is the specification.

Hy invention relates to chimneys and smoke stacks, and the object of the invention is to provide a means which will prevent smoke from being driven back down the chimney by prevailing winds or gales.

The invention comprises the novel features of construction hereinafter described and particularly set forth in the appended claims.

An embodiment of the invention is illustrated in the accompanying drawing, in which- Figure 1 is a perspective view showing my improved chimney as it will be constructed in event of there being one obstacle or wind obstruction to contend against. Fig. 2 represents an end elevation of two of my chimneys both of which are constructed in accordance with the requirement of my invention there being two wind obstructions, one at either side of each chimney. Fig. 3 is an enlarged detailed perspective view of the chimney top as it would be constructed in event of there being three wind obstructions, the obstructions being in the directions as denoted by the arrows.

In the drawings like characters of reference indicate corresponding parts in each figure.

1 represents a building of which 2 is the usual inclined roof.

3 is the body of the chimney which rests with its base on the roof and of which 4 is the usual top.

5 is the opening in the chimney through which the smoke and other waste products pass.

I have found that smoke is driven backward or prevented from passing upwardly through the chimney opening when the wind is blowing in a certain direction even when the chimney is apparently well built, and also that when the wind blows from the other directions the smoke is not prevented from passing up through the chimney and consequently there is what is termed a good smoke draft.

The hindrance of the smoke draft when the wind is blowing from the first mentioned di- Specification of Letters Patent.

Patented Nov. 24, 1908.

Serial No. 361,884.

rection is caused by the driving or whirling l of the wind over or around some adjoining or adjacent obstruction between the chimney and the point from which the wind is blowing. The obstruction always has a portion of it passing to a higher level than the level of the chimney.

In referring now to Figs. 1 and 2 it will be seen that if the wind be blowing towards the chimney in a direction such that the inclined roof 2 intervenes between the point from which the wind is blowing and the chimney the roof will form an obstruction to the wind. If the level of the top of the chimney be higher than the peak of the roof then there will be no obstruction and conse quently no hindrance of smoke draft. For this reason the level of the chimney has been shown below the level of the peak (3 of the roof. The wind in blowing past or over the peak (3 of the roof is directed downwardly and with the ordinary chimney it isfree to enter the opening in the chimney, as the top of the chimney is horizontal and the direction of the wind is inclined to the horizontal. Consequently the side of the chimney farthest from the peak obstructs the wind in passing and deflects it down the chimney.

In my invention, as shown in Fig. I, I have prevented the dowmvardly directed wind from entering the chimney by erecting an upwardly extending weather break 7 on the top of the chimney. In this case it is considered there is simply one obstacle between the chimney and the direction from which the wind is blowing, which obstacle is the roof 2.

In Fig. 2 where there are two buildings side by side, each having chimneys on their opposing roofs 2, it is necessary to prcwide each chimney, in accordance with my invention, with two weather breaks 7, 7. The reason for this is that each chimney is subjected to the wind being directed downwardly into it by either of the obstructions formed by the roofs 2, as the wind may blow from two directions and have an obstruction between the point from which it is blowing and the chimney top. The peak (3 of the right hand building will direct wind downwardly to the top of the chimney on the left hand building, provided the wind is blowing from the proper direction, and the peak (3 of the left hand building will direct wind downwardly to the chimney carried by the building when the wind is blowing from the opposite direction. For this reason both the wind breaks 7 are required to prevent the wind directed downwardly over the peaks from entering the chimney.

In the chimney shown in Fig. 3 there are three wind breaks 7 which are placed on the top of the chimney bordering the sides of the chimney opening which aretowards the obstructions. These are not shown, but would appear in the direction denoted by the arrows.

The height to which the wind breaks extend above the level of the chimneys will vary according to the position of the chimney but it is necessary that they pass completely across the side of the chimney opening otherwise the wind could pass into and down the opening.

What I claim as my invention is:

1. A chimney which when located adjacent to a surrounding obstruction, has the side nearest the obstruction built higher than the sides away from said obstruction as and for the purpose specified. 4

2. A chimney which when located adjacent to a surrounding obstruction, the 0bstruction passing to a higher plane than the top of the chimney, having the side nearest the obstruction built higher than the side away from the obstruction as and for the purpose specified.

3. A chimney which when located adjacent to a surrounding obstruction has an upwardly extending wind break at the top and to the side of the chimney opening adjacent the obstruction such wind break passing completely across the opening and being of uniform height, as and for the purpose specified.

lVhitemouth, 30th J anuary A. D. 1907.

HOWARD CORREGAN.

Signed in the presence of ARTHUR TVVILLIAM MORLEY, lVILLIAM GARSTOF. 

